The key gene in mammalian sex determination is
A) the testis-determining factor gene.
B) the Y-factor gene.
C) the holandric factor gene.
D) the X-inactivation center.
E) the lyonization gene.
Correct Answer:
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Q12: The chromosome theory of inheritance states that
A)genes
Q13: In an organism with 16 chromosomes per
Q14: Synaptonemal complex forms during
A)leptonema.
B)zygonema.
C)pachynema.
D)diplonema.
E)diakinesis.
Q15: The spindle fibers attach to the centromere
Q16: In human males,genes on the X chromosome
Q18: Phenotypically,a female (XX)mouse embryo that was transformed
Q19: In butterflies,males are the _ sex.
A)homozygous
B)heterozygous
C)homogametic
D)heterogametic
E)hemizygous
Q20: Which of the following statements is not
Q21: The chromosome theory of inheritance sought to
Q22: A woman who is heterozygous for the
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